Call to undefined method org\nameapi\client\services\system\SystemServiceFactory

[Oakwv]

I have:
OPEN TAG
require_once('/hdcol2/redoakproject/vendor/optimaize/nameapi-client-php/src/org/nameapi/client/services/ServiceFactory.php');
use org\nameapi\client\services\ServiceFactory;
use org\nameapi\ontology\input\context\Context;
use org\nameapi\ontology\input\context\Priority;

function nameparse() {
$context = Context::builder()
->place('US')
->priority(Priority::REALTIME())
->build();

$serviceFactory = new ServiceFactory('THEKEYISHERE', $context);

//var_dump($serviceFactory);
$pinger = $serviceFactory->systemServices()->pinger();
$pong = $pinger->ping();

}
CLOSE TAG

I get:

Call to undefined method org\nameapi\client\services\system\SystemServiceFactory::pinger()

I have tried a few different combinations of use and require. No luck

NO WORRIES I SWITCHED TO CURL WORKS

Thanks
oak